The Culm Measures area of north Devon covers 60, 000 hectares and is in three pockets.

BBC: Making a home for rare wildlife in north Devon

There is also a flood alert for the River Culm due to the rain and melting snow.

BBC: More snow is forecast overnight in Devon

The Culm grassland is based on heavy clay which is unusable for agriculture, so is largely untouched apart from the expert management from the Devon Wildlife Trust.

BBC: Making a home for rare wildlife in north Devon